Used Baader O-III Nebula Visual Filter (10nm), 2" Pier Extension making sure it fits securely

making sure it fits securely with the Seestar

75 filter thread) Standard package items  A 131F OTA，a pair of tube rings

with grip traction knurled right into the metal

M54 Camera Adapter

StarPointer Pro was designed for astronomers by astronomers to provide the easiest experience locating celestial objects in the night sky

Used Baader O-III Nebula Visual Filter (10nm), 2" Pier Extension making sure it fits securelyCondition: This is a used Baader O III 10nm visual filter in very good condition with mostly clean optics. There is some minor spotting; see the photos. It comes in its original jewel case. Description: Quick Overview Baader 2 OIII filter improves contrast of nebulae for visual observation and imaging 10nm passband includes OIII (501nm) and H Beta (486nm) wavelengths emitted by diffuse and planetary nebulae and supernova remnants Superior fine optical